The following circuit shows the use of potentiometer to measure the internal resistance of a cell:
Figure
(i). When the key K is open, how does the balance point change, if the current from the driver cell decreases?
(ii). When the key K is closed, how does the balance point change if R is increased, keeping the current from the driver cell constant?
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Answer:
nahi aata nahi aata nahi aata sorry ,,
Fcuk
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Answer:
here is the answer in the given picture....
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